EP1035376A1 - Clapet anti-retour pour chauffe-eau à gaz - Google Patents

Clapet anti-retour pour chauffe-eau à gaz Download PDF

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Publication number
EP1035376A1
EP1035376A1 EP00101456A EP00101456A EP1035376A1 EP 1035376 A1 EP1035376 A1 EP 1035376A1 EP 00101456 A EP00101456 A EP 00101456A EP 00101456 A EP00101456 A EP 00101456A EP 1035376 A1 EP1035376 A1 EP 1035376A1
Authority
EP
European Patent Office
Prior art keywords
flap
return valve
valve according
gas
surface area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00101456A
Other languages
German (de)
English (en)
Inventor
Jürgen Schwalme
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolf GmbH
Original Assignee
Wolf GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wolf GmbH filed Critical Wolf GmbH
Publication of EP1035376A1 publication Critical patent/EP1035376A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L3/00—Arrangements of valves or dampers before the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the invention relates to a backflow valve for use in a gas condensing boiler according to claim 1.
  • the condensation enthalpy is used to increase efficiency.
  • the one in the exhaust stream Water vapor contained condenses during operation on the fins of a condensation heat exchanger.
  • a large Part of the condensed water flows through the paths provided in a siphon of the device and is usually in the sewer system dissipated.
  • a small part of the condensed water remains however in the heat exchanger, where it is after switching off the Burner due to the residual heat in the components of the Therme is there, evaporated again.
  • Most of the emerging Steam escapes from the gas condensing boiler via the flue gas system.
  • a small part of the steam flows under unfavorable ones Conditions on the line for the supply of a Gas-air fuel mixture back into a gas blower device.
  • a flap which consists of sheet metal and is provided with a silicone seal.
  • This well-known Solution leads to a high pressure loss due to the The weight of the VA sheet used, and the sealing material not long-term resistant to that in condensing boilers occurring condensation and steam. Furthermore, there is also the danger that the sheet will bend during assembly.
  • a similar solution is known from DE 196 35 974 A, wherein in this known flap gas and air in a mixing system should be mixed effectively.
  • DE 197 29 047 C1 proposes a solution a float or a ball known, mostly in the gas-air mixing device or arranged in the exhaust system become. Neither of the two constructions mentioned prevented however, the escape of steam from the combustion chamber housing in the gas blower.
  • the object underlying the invention is a Non-return valve for use in a gas condensing boiler to create that particularly easy to build and manufacture can be and also has a very low weight, um for thermal baths with a comparatively low output can also be used.
  • the non-return valve in the form of the non-return valve after the Invention has the particular advantage that it is without large amount of space in an existing gas condensing boiler integrates.
  • the flap including the intake will expediently in a manifold made of die-cast aluminum installed between the gas blower and the burner that additional Seals can be omitted. It only has to be the seal can be used, even without a non-return valve is used.
  • the intake as well as the backflow valve are made of plastic injection molding and can therefore can be manufactured very inexpensively.
  • the pressure loss of the flap is allowed at maximum heating output not get too big and even with minimal heating output do not increase too much, otherwise the speed of the gas blower be raised too far for the respective heating output ought to.
  • the conventional flaps lead in particular small heating output to a disproportionate increase in Pressure loss.
  • this disadvantage is eliminated in that the flap is molded from a dimensionally stable thermoplastic becomes an essential due to its low density has lower weight and higher stability as comparable flaps made of stainless steel sheet.
  • the Pressure loss in the various heating capacities is thus much lower and thus also the noise emission reduced by lower fan speeds.
  • the present invention can be used without any additional seal can be used.
  • the seal will through a flat flap with a high flatness and a opposite sealing area with appropriate flatness of a fixed camp reached.
  • the sealing area of the fixed bearing therefore has a defined width.
  • the degree of turbulence in the making Gap is increased by lying on top of each other Flap and fixed bearing surfaces with a special structure be provided. This can be a roughness class, for example according to VDE 3400 or a specific one Molded structure for plastic surfaces.
  • the tightness over a circumferential Improve edge or circumferential flange on the flap This creates a labyrinth with a narrow gap and a high pressure loss of a leakage flow through which the leakage flow is further reduced.
  • the peripheral edge or the circumferential flange can be inside a flow channel or outside or both inside the flow channel as well as be arranged outside the same.
  • the backflow valves are generally not on one vertical line stored above the center of gravity, but outside the center of gravity, so even at low back pressures a sufficiently high sealing force is still available stands. Furthermore, the hole for the storage of the backflow valve designed as an elongated hole so that the manufacturing tolerances be balanced and the flap with a certain play on the sealing surface. With the conventional Flap is usually the central axis of the elongated hole arranged perpendicular to the flap surface. But this has the disadvantage that the flap itself in the rest position of the prevailing equilibrium of forces at the top edge opens and there is a gap that leads to a leak in the Valve at low pressures.
  • the elongated hole is arranged in this way and formed that the central axis of the elongated hole perpendicular to the line between the slot center and the The focus of the flap is.
  • the gravity of the flap thus acts perpendicular to the slot axis and it becomes the Tangential force at the slot is therefore zero, it also arises no gap at the top edge of the flap and the flap is there sufficiently tight even with small back pressures.
  • the backflow valve according to the present invention can a gas condensing boiler can be used, the schematic is shown in Fig. 1.
  • the condensing boiler is generally with 1 denotes and comprises an air / exhaust gas connection 2, a Combustion chamber housing 3, a backflow valve 4 according to the present Invention, an exhaust pipe 5, a pressure expansion vessel 6, a condensate siphon 7, a heating circuit pump 8, one Hot water heat exchanger 9, a radiator 10, a gas combi valve 11, a combustion chamber 12, a hot water heat exchanger 13, a burner 14, a gas / air mixing chamber 15, a gas blower 16, a blower motor 17 and a quick breather 18.
  • Condensed in the condensing boiler shown the water vapor contained in the exhaust gas during operation the fins of the condensation heat exchanger 13.
  • a big one Part of the condensed water flows in via the paths provided the condensate siphon 7 of the device and is in the sewer dissipated.
  • a small part of the condensed water remains however in the heat exchanger 13 where it is after switching off of the burner due to the residual heat in the different Components of the thermal bath are stuck, evaporated again.
  • the biggest Part of the resulting steam flows out of the gas condensing boiler via the exhaust system with the exhaust pipe 5. On but a small part of the steam that forms flows over the Line for the supply of the gas-air-fuel mixture back into the gas blower 16.
  • the thermal baths that are not running are pressurized with exhaust gas via the common exhaust manifold. Without a non-return valve, however, the exhaust gas would be forced into the installation room via the burner and the outer housing. The air in the installation room would be enriched with CO 2 , which can also be effectively prevented by the present invention.
  • Fig. 2 shows an exploded view Installation kit of a non-return valve, which works without a large Integrate space into the existing gas condensing boiler leaves.
  • the flap 23 including the receptacle 22 is in one Manifold 19 made of die-cast aluminum between the gas blower and burner built in that additional seals are omitted can. Only the seal 20 needs to be used, however is also used without a non-return valve anyway.
  • the Recording 22 and the backflow valve 23 are made of plastic injection molding manufactured and can therefore be manufactured very inexpensively become.
  • the flap 23 is expediently made of a dimensionally stable Thermoplastic material produced by injection molding, which Material essential due to its low density has lower weight and higher stability as comparable flaps made of stainless steel sheet.
  • Fig. 3 shows the flap 23 with the receptacle 22 in the built-in Status.
  • the flap 23 is formed flat and its sealing area is trained with a particular flatness, what also for the sealing edge 24 of the fixed bearing 22, which defines a Width, applies.
  • the degree of turbulence in an emerging The gap is increased when the flap 23 is closed by the superimposed sealing surfaces of the flap and Fixed bearings, for example, have a special structure become. This can be done by the concerned Sealing surfaces with a roughness according to a roughness class larger than 33 according to VDI 3400 or the plastic surfaces with a special shape structure be equipped.
  • the flap 23 can according to Fig. 4 with a peripheral edge or a peripheral Flange 26 can be equipped.
  • This flange 26 can according to the embodiments according to Figures 5 to 7 either outside a flow channel (Fig.5), within a flow channel (Fig.6) or both inside and outside a flow channel (Fig. 7).
  • the respective protruding circumferential edges or flanges are in designated the figures with 27a, 27b.
  • the flange 26 has also a peripheral outer surface 27, the additional can increase the sealing effect.
  • FIG. 4 is the flap with projecting from the plane of the flap Bearing eyes 25a, 25b equipped.
  • These eyelets are each equipped with an elongated hole, which in Fig. 8 in Top view is shown, wherein this elongated hole is an elongated hole center 28 owns.
  • the respective elongated hole is arranged such that the central axis 30 of the elongated hole extends perpendicular to a line 31 between the elongated hole center 28 and the center of gravity 29 of the flap 23.
  • the force of gravity of the flap 23 thus acts perpendicular to the slot axis, the tangential force F T at the slot becomes zero and there is no gap at the top edge of the flap.
  • the flap thus becomes sufficiently tight even with small back pressures, so that it can be used preferentially in condensing boilers with a comparatively low output (eg 30KW).
  • both the flap 23 and the receptacle 22 made for the flap from the plastic material mentioned the whole construction leads to a very small weight and the flap can for example be a weight of only 5g, so that they are also comparatively very small back pressures still excellent Sealing effect achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lift Valve (AREA)
EP00101456A 1999-03-10 2000-01-25 Clapet anti-retour pour chauffe-eau à gaz Withdrawn EP1035376A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19910644 1999-03-10
DE19910644 1999-03-10

Publications (1)

Publication Number Publication Date
EP1035376A1 true EP1035376A1 (fr) 2000-09-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101456A Withdrawn EP1035376A1 (fr) 1999-03-10 2000-01-25 Clapet anti-retour pour chauffe-eau à gaz

Country Status (1)

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EP (1) EP1035376A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1239091A3 (fr) * 2001-03-05 2002-11-20 Pedro Sanchez Aranega Dispositif anti-retour pour des conduits d'un système d'égout
EP2792950A1 (fr) * 2013-04-17 2014-10-22 Guillot Industrie Brûleur avec organe de raccordement
EP2871393B1 (fr) * 2013-11-07 2017-10-04 Vaillant GmbH Dispositif de sécurité anti-retour
EP3232135A1 (fr) * 2016-03-07 2017-10-18 Vaillant GmbH Vanne de protection pour un ventilateur d'une armature de gaz
CN107709883A (zh) * 2015-07-09 2018-02-16 林内株式会社 热水器
WO2018122574A1 (fr) * 2016-12-29 2018-07-05 I.C.I. Caldaie S.P.A. Chaudière de production d'eau chaude ou de vapeur
NL2022704B1 (en) * 2019-03-08 2020-09-17 Bdr Thermea Group B V Gas heater, method for operating the gas heater and a gas boiler
EP3748229A1 (fr) * 2019-06-03 2020-12-09 Pittway Sarl Valve anti-reflux d'un brûleur à gaz et ensemble comprenant la valve anti-reflux
CN112855987A (zh) * 2021-01-07 2021-05-28 宁波方太厨具有限公司 用于热水器的零冷水单向阀
EP4130573A1 (fr) 2021-08-06 2023-02-08 BDR Thermea Group B.V. Soupape de silencieux et anti-retour d'échappement
DE102022213652A1 (de) 2022-12-14 2024-06-20 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoff-Luft-Zufuhrvorrichtung für einen Brenner, insbesondere einen Wasserstoffbrenner, eine Rückschlagsicherung enthaltend eine solche Brennstoff-Luft-Zufuhrvorrichtung sowie ein Heizgerät mit einer solchen Rückschlagsicherung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815629A (en) * 1971-07-26 1974-06-11 J Oberholtzer Sewer relief valve
US4274436A (en) * 1979-08-16 1981-06-23 Xomox Corporation Wafer-type swing check valve construction
US5234018A (en) * 1992-11-16 1993-08-10 Grachal Bruce M Sewer check valve and cleanout apparatus
DE29619121U1 (de) * 1995-10-30 1996-12-19 Joh. Vaillant Gmbh U. Co, 42859 Remscheid Sperreinrichtung
DE19606403A1 (de) * 1996-02-21 1997-08-28 Centrotherm Abgastechnik Gmbh Anordnung zum Anschluß einer Verbrennungseinrichtung an ein Kaminrohr
DE19635974A1 (de) 1996-09-05 1998-03-12 Stiebel Eltron Gmbh & Co Kg Gas/Luft-Mischsystem für Gasheizgeräte
DE19729047C1 (de) 1997-07-08 1998-09-24 Honeywell Bv Mischvorrichtung zur Erzeugung eines Gemisches aus Gas und Verbrennungsluft für einen Brenner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815629A (en) * 1971-07-26 1974-06-11 J Oberholtzer Sewer relief valve
US4274436A (en) * 1979-08-16 1981-06-23 Xomox Corporation Wafer-type swing check valve construction
US5234018A (en) * 1992-11-16 1993-08-10 Grachal Bruce M Sewer check valve and cleanout apparatus
DE29619121U1 (de) * 1995-10-30 1996-12-19 Joh. Vaillant Gmbh U. Co, 42859 Remscheid Sperreinrichtung
DE19606403A1 (de) * 1996-02-21 1997-08-28 Centrotherm Abgastechnik Gmbh Anordnung zum Anschluß einer Verbrennungseinrichtung an ein Kaminrohr
DE19635974A1 (de) 1996-09-05 1998-03-12 Stiebel Eltron Gmbh & Co Kg Gas/Luft-Mischsystem für Gasheizgeräte
DE19729047C1 (de) 1997-07-08 1998-09-24 Honeywell Bv Mischvorrichtung zur Erzeugung eines Gemisches aus Gas und Verbrennungsluft für einen Brenner

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1239091A3 (fr) * 2001-03-05 2002-11-20 Pedro Sanchez Aranega Dispositif anti-retour pour des conduits d'un système d'égout
EP2792950A1 (fr) * 2013-04-17 2014-10-22 Guillot Industrie Brûleur avec organe de raccordement
FR3004789A1 (fr) * 2013-04-17 2014-10-24 Guillot Ind Sa Bruleur avec organe de raccordement
EP2871393B1 (fr) * 2013-11-07 2017-10-04 Vaillant GmbH Dispositif de sécurité anti-retour
US10480821B2 (en) * 2015-07-09 2019-11-19 Rinnai Corporation Water heater
CN107709883A (zh) * 2015-07-09 2018-02-16 林内株式会社 热水器
KR20180029958A (ko) * 2015-07-09 2018-03-21 린나이가부시기가이샤 급탕기
US20180187921A1 (en) * 2015-07-09 2018-07-05 Rinnai Corporation Water heater
EP3321580A4 (fr) * 2015-07-09 2019-07-17 Rinnai Corporation Chauffe-eau
EP3232135A1 (fr) * 2016-03-07 2017-10-18 Vaillant GmbH Vanne de protection pour un ventilateur d'une armature de gaz
WO2018122574A1 (fr) * 2016-12-29 2018-07-05 I.C.I. Caldaie S.P.A. Chaudière de production d'eau chaude ou de vapeur
NL2022704B1 (en) * 2019-03-08 2020-09-17 Bdr Thermea Group B V Gas heater, method for operating the gas heater and a gas boiler
EP3751196A1 (fr) * 2019-03-08 2020-12-16 BDR Thermea Group BV Chauffage au gaz, procédé pour faire fonctionner le chauffage au gaz et d'une chaudière à gaz
US11668493B2 (en) 2019-03-08 2023-06-06 Bdr Thermea Group B.V. Gas heater, method for operating the gas heater and a gas boiler
EP3748229A1 (fr) * 2019-06-03 2020-12-09 Pittway Sarl Valve anti-reflux d'un brûleur à gaz et ensemble comprenant la valve anti-reflux
CN112855987A (zh) * 2021-01-07 2021-05-28 宁波方太厨具有限公司 用于热水器的零冷水单向阀
EP4130573A1 (fr) 2021-08-06 2023-02-08 BDR Thermea Group B.V. Soupape de silencieux et anti-retour d'échappement
WO2023011986A1 (fr) 2021-08-06 2023-02-09 Bdr Thermea Group B.V. Soupape d'échappement, anti-retour et de suppression
DE102022213652A1 (de) 2022-12-14 2024-06-20 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoff-Luft-Zufuhrvorrichtung für einen Brenner, insbesondere einen Wasserstoffbrenner, eine Rückschlagsicherung enthaltend eine solche Brennstoff-Luft-Zufuhrvorrichtung sowie ein Heizgerät mit einer solchen Rückschlagsicherung

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